WORLD JOURNAL OF ADVANCE
HEALTHCARE RESEARCH

( An ISO 9001:2015 Certified International Journal )

An International Peer Review Journal for Medical Science and Pharma Professionals
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Indexing

Abstract

COMPARISON OF ANTERIOR CHAMBER DEPTH (ACD) USING CONTACT ULTRASOUND A-SCAN AND CORNEAL TOPOGRAPHY

Rahaf Jarjous*, Taym Darwish and Najwa Kordoghli

ABSTRACT

Purpose: To compare the anterior chamber depth (ACD) using contact ultrasound A-scan and optical measurements (SIRIUS). Methods: 105 eyes of 55 patients were included in this study, ACD estimation was measured using contact ultrasound A-scan (AVISO) and then using corneal topography (SIRIUS). the Intra Ocular Lens (IOL) power was calculated using Haigis formula with anterior chamber depth measured by SIRIUS and AVISO and the results were compared. we also studied the correlation between central corneal thickness and the differences in ACD between the two devices was studied using Pearson Correlation. Results: Mean anterior chamber depth (ACD) using contact ultrasound A-scan and corneal topography (SIRIUS) was 3.3±0.3 and 3.6±0.3 respectively (p=0.0001). Mean IOL power (Haigis) using contact ultrasound A-scan and corneal topography (SIRIUS) was 22.01±3.3 and 21.3±3.3 respectively (p=0.01). negative correlation was found between central corneal thickness and the differences in ACD measurements. Conclusion: Contact ultrasound A-scan(AVISO) gives consistently lower measurements for ACD compared to corneal topography (SIRIUS) and Such a difference between the measurement systems also does not significantly affect the IOL power.

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